Disable Shutdown/Reboot

[zfs] / module / zfs / zfs_vfsops.c

diff --git a/module/zfs/zfs_vfsops.c b/module/zfs/zfs_vfsops.c
index c138b6ffe231a4700decc53a88985467f4d28477..a602c5d624899b0e623e39df95573bd26edf7355 100644 (file)
--- a/module/zfs/zfs_vfsops.c
+++ b/module/zfs/zfs_vfsops.c
@@ -66,7 +66,6 @@
 #include "zfs_comutil.h"
 
 #ifdef HAVE_ZPL
-extern int sys_shutdown;
 
 /*ARGSUSED*/
 int
@@ -89,14 +88,19 @@ zfs_sync(vfs_t *vfsp, short flag, cred_t *cr)
                ZFS_ENTER(zfsvfs);
                dp = dmu_objset_pool(zfsvfs->z_os);
 
+#ifdef HAVE_SHUTDOWN
                /*
                 * If the system is shutting down, then skip any
                 * filesystems which may exist on a suspended pool.
+                *
+                * XXX: This can be implemented using the Linux reboot
+                *      notifiers: {un}register_reboot_notifier().
                 */
                if (sys_shutdown && spa_suspended(dp->dp_spa)) {
                        ZFS_EXIT(zfsvfs);
                        return (0);
                }
+#endif /* HAVE_SHUTDOWN */
 
                if (zfsvfs->z_log != NULL)
                        zil_commit(zfsvfs->z_log, 0);